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Process for preparing mordenite/ZSM-5 mixed crystal material

A technology of mordenite and ZSM-5, which is applied in the field of preparing mordenite/ZSM-5 mixed crystal materials, and achieves the effect of low synthesis cost

Inactive Publication Date: 2007-01-24
CHINA PETROLEUM & CHEM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] So far there is no report on the method of synthesizing mordenite / ZSM-5 mixed crystal material

Method used

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  • Process for preparing mordenite/ZSM-5 mixed crystal material
  • Process for preparing mordenite/ZSM-5 mixed crystal material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Raw materials: 35.1g aluminum sulfate solution

[0053] 70.7g water glass

[0054] 12.4g sulfuric acid solution

[0055] 98.7g H 2 o

[0056] 0.8g NaZSM-5

[0057] Experimental process: First slowly add aluminum sulfate solution under stirring water glass solution to form a gel, then add sulfuric acid solution, add NaZSM-5 seed crystals during rapid stirring, then stir it vigorously, and add the mercerizing compound synthesized in Comparative Example 1 after stirring well 0.5 g of zeolite seed crystals, then moved into a reaction kettle, crystallized at 165°C for 48 hours, and dried in an oven at 100-110°C for 3-4 hours to obtain the raw powder of the mixed crystal material, coded as K1.

Embodiment 2

[0059] Raw materials: 35.1g aluminum sulfate solution

[0060] 70.7g water glass

[0061] 12.4g sulfuric acid solution

[0062] 98.7g H 2 o

[0063] 0.8g NaZSM-5

[0064] Experimental process: First slowly add aluminum sulfate solution under stirring water glass solution to form a gel, then add sulfuric acid solution, add NaZSM-5 seed crystals during rapid stirring, then stir it vigorously, and add the mercerizing compound synthesized in Comparative Example 1 after stirring well 0.9g of zeolite seed crystals, then moved into the reaction kettle, crystallized at 165°C for 48 hours, and dried in an oven at 100-110°C for 3-4 hours to obtain the raw powder of mixed crystal material, coded as K2.

Embodiment 3

[0066] Raw materials: 35.1g aluminum sulfate solution

[0067] 70.7g water glass

[0068] 12.4g sulfuric acid solution

[0069] 98.7g H 2 o

[0070] 0.8g NaZSM-5

[0071] Experimental process: First slowly add aluminum sulfate solution under stirring water glass solution to form a gel, then add sulfuric acid solution, add NaZSM-5 seed crystals during rapid stirring, then stir it vigorously, and add the mercerizing compound synthesized in Comparative Example 1 after stirring well 1.6 g of zeolite seed crystals were then transferred into a reaction kettle, crystallized at 165°C for 48 hours, and then dried in an oven at 100-110°C for 3-4 hours to obtain the raw powder of the mixed crystal material, coded as K3.

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Abstract

The invention discloses a process for preparing mordenite / ZSM-5 mixed crystal material, which comprises charging mordenite into ZSM-5 synthesized reaction mixture as seed crystal, and water thermal crystallization. The invention realizes low preparation cost and more ideal catalyzing performance.

Description

technical field [0001] The present invention relates to a method for preparing a mixed crystal material, and more specifically, the present invention relates to a method for preparing a mordenite / ZSM-5 mixed crystal material. Background technique [0002] With the continuous improvement of the quality requirements of chemical products, higher requirements are put forward for the catalytic performance of zeolite catalytic materials. People's exploration of single-structure zeolites has reached a certain depth. In order to improve the performance of zeolite catalytic materials and make them more suitable for industrial applications, it is a new way to explore mixed-crystal catalytic materials with multiple structure types. [0003] In oil refining and petrochemical industries, ZSM-5 molecular sieve and mordenite are two widely used catalytic materials, which have many unique advantages and insurmountable disadvantages. For example, the special pore structure and excellent the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B39/02C01B39/26C01B39/38B01J29/06B01J29/18B01J29/40
Inventor 宗保宁赵天波李凤艳马忠林张慧英
Owner CHINA PETROLEUM & CHEM CORP